This is the 61st most frequent Croatian word.
svih
"Svih" means "of all" or "all" in the genitive plural form.
Here, 'svih' is the genitive plural form, used after a preposition to mean 'for all' in the sense of a group of people.
Sretan sam zbog svih koji su uspjeli postići ono što žele.
I am happy for all who have managed to achieve what they want.
The word 'svih' here is used as a plural form in the genitive case, expressing 'of all' in relation to kinds of art.
Volim sve vrste umjetnosti, ali slikarstvo mi je najdraže od svih.
I love all kinds of art, but painting is my favorite of all.
In this sentence, 'svim' is the locative plural form, referring to 'to all' as in all the heroes.